Window-screen.



J. H. CHAMBBRLIN.

WINDOW SCREEN. APPLIOATION FILED .AUG. 23, 1911.

1,025,244. Patented May 7, 1912.

2 SHEETS-SHEET 1."

J. H. GHAMBERLIN.

WINDOW SCREEN.

APPLIUATION FILED AUG. 23, 1911.

Patented May 7, 1912.

2 SHEETSSHEET 2.

' l nrega ar.

wwwmoao F:|.I[. XML? Wawf JOHN H. CHAMBERLIN, 0F KALAMAZOO, MICHIGAN.

WINDOW-SCREEN.

Specification of Letters Patent.

Patented May I, 1912.

Application filed August 23, 1911. Serial No. 645,496.

To all whom 2'25 may concern:

Be it known that I, J ()IIN H. CIIAMBERLIN, a citizen of the United States, residing at the city of Kalamazoo, county of Kalamazoo, State of Michigan, have invented certain new and useful Improvements in Vindow-Screens, of which the following is a specification.

This invention relates to improvements in window screens.

My present improvements relate to window screens of the type shown in Letters Patent, No. 950,746, issued to me March 1st, 1910, in which the screen is supported without a full or complete frame, my present improvements being a modification and improvement upon the structure there illus trated.

The main object of this invention is to provide in a detachable frameless window screen improved attaching and tensioning means.

Further objects, and objects relating to structural details and economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claim.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a front perspective view of a window having my improved screen applied thereto. Fig. II is an enlarged detail vertical section taken on a line corresponding to line 22 of Fig. I, the window sashes being omitted. Fig. III is a detail horizontal section taken on a line corresponding to line 3-3 of Fig. II. Fig. IV is a detail horizontal section taken on a line corresponding to line 4 4: of Fig. II. Fig. V is a detail perspective view showing the attaching means for one end of the upper bar.

In the drawing, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, 1 represents a window casing of common construction.

The screen 2 is adapted to cover the entire window, that is, both the upper and lower sashes thereof. The screen 2 is substantially the width of the window casing so that it overlaps the outer window stops 3, the edges of the screen being supported by the stops. Cross bars 4 and 5 are provided for the top and bottom of the screen, the bar a being the top bar and the bar 5, the bottom bar. The screen is secured to the outer sides of these bars by means of the clamping strips 6 and 7, which are secured to the top and bottom bars by means of the screws 8, the screens being clamped between the bars and the clamping strips. The ends of the bars 6 and 7 overlap the outer sides of the stops 3. The bars 1 and 5 fit between the stops, that is, their ends abut the inner edges of the stops; The bars 4 and 5 are preferably of the same thickness as the stop 3 so that their inner sides are flush with the inner faces of the stops and do not project into the path of the upper window sash which may be moved up and down as though the screen were not present.

The ends of the bars 4 and 5 are provided with vertical slots 9 to receive the flanges 10 on the supporting members 18. These supporting members are secured upon the inner edges of the outer window stops 3, the flanges projecting inwardly to engage the vertical slots in the ends of the screen bars 4 and 5 as is clearly shown in Figs. III and IV of the drawings. The upper clamping bar 6 projects above the bar 4; to overlap the top window stop 14:, (see Fig. V). The upper screen bar 4: is retained upon its retaining members 13 by means of the button-like retaining members 15,which are pivoted at 16 and provided with outturned flanges 17 at their upper ends adapted to swing under the supports 13 and under the bar 4 (see Fig. V). This upper bar may be made conveniently detachable from the window frame in various ways.

The lower bar 5 is secured and tension applied to the screen by means of the threaded attaching rods 17 and the hooks 18, the hooks 18 being threaded into the sills, the rods 17 being provided with lateral hooks adapted to engage the hooks 18 and being adjustably secured to the bar by means of the sleeve-like nuts 19. These nuts are arranged in holes 20 extending vertically through the bars 4, as is clearly shown in Fig. II. The heads of the nuts are provided with grooves 21 adapted to receive a screw driver, the nuts being of the type commonly used on the outer ends of the spokes of bicycle and like-wheels; Bearing washers 22 are preferably provided for the nuts.

In applying the screen to the window, the

bar 4 is first slipped upon its supports 13 and the retaining buttons 15 swung into place. The lateral hooks of the attaching rods 17 are then engaged with the hooks 18 and the screen. drawn tight by means of ,the nuts 19. The desired tension can be applied to draw the screen tight so that it i lies fiat. against the stops. 1- preferably provide a center bar 23 and a coacting-clamping str1p 2 l. whlch are adyustably secured upon thescreen by means of the screws The clamping strip 24 overlaps the stops 3 in the same manner as. clamping strips (3 and 7. This assists in supporting the screen, and, further, the center bar covers the meeting rails of the sashes, thus adding to the finish .and appeaance of the screen.

The center bar may be adjusted to come opposite the meeting rails of the sash as sometimes the upper and lower sash are of the same length vand sometimes the upper sash is shorter 1n a manner which admits its. being attached or removedvery easily. Further, it is very secure whenattached. As the edges of the screen overlap the side stops, the width of the window may vary considerably without in any wiseaffecting. the effectiveness of the screen. Further, window casings frequently .warponbecome somewhat twisted, and my improved screencan be applied to such windows without special fitting and are interchangeable, whereas it is found in practice that where fullfra-me casings are provided, they are rarely interchangeable, that is, the screen must be fitted to the particular window and used only in connection with thatwindow.

-. A closure strlp. 2G is provided for closing the space between the lower edge of the screen and the window sill. This closure is preferably a thin strip of material which is arranged on the inner side of the outer stops and supported by blocks 27 which are arranged between the outer stops 2 and the inner stops 28. lVhen this closure and its supporting blocks are in place, the upper sash can only be moved down until its meeting rail engages the closure, but it will be obvious that this is no objection, as the upper sash is substantially fully open when this takes place.

My improved screen is very economically produced, no careful framing being required, and is, as stated, very quickly and easily applied. Its supports do not obstruct the window and are quite unnoticeable from either the inside or the outside of the window, particularly when the window is closed.

here renewal of the screens is required, this is readily accon'lplished, and, may be done by a person not especially skilled in the use of tools as it is only necessary to screw the bars to the screen, the screen being cut of a suitable length which need not be very accurate 011 account of adjustment which is possible in the securing means.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

The combination with a window casing, of a screen, cross bars secured to the top and bottom thereof, the lower cross bar having vertical slots in its ends, and means for securing the lower cross bar to the window sill, comprising hooks on the sill, threaded rods with hooks to engage said hooks on the sill, and nuts for said rods, said lower cross bar being provided. with vertical holes therethrough.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

JOHN H. GHAMBERLIN.

.flopies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

